Razor sharpening device



Dec. 19, 1933. B. G. MONTGOMERY RAZOR SHARPENING DEVICE Filed Aug.

Patented Dee. 19, 1933 17,940,3654 I RAZOR SHARPENING.v DEVICE BeGabriel Montgomery, Djrehoim, sweden, me l signor to -Aktiebolaget Oryg,Grolvitenborg,v

Sweden, a jvointfstock company f Application August`v4,'1930,` SerialNo. and `inSweden JulyV 9, 1930.

The present invention relates to safety razors and particularly to acombination container and stropping device.

. More particularly the invention relates to a l combined case andstropping device for a safety razor of the type having a Vframe. apivot, ra blade holder pivoted to the frame and ak blade carried in theblade holder, the container being provided with a cover memberreoiprocable thereon and provided with stropping means on its inner sideadapted to be contacted by the blade of the razor when the razor is inits normal position in the'container.

'Ihe principal object of the invention is to provide a combined case andstropping d evice fora razor of the aforementioned type which will besimple' and compact in construction and will operate eiciently as astropping device.

Other objects of the invention will appear from the followingdescription taken in connection with the appended drawing wherein:

Fig. 1 shows a longitudinal section of a device adapted for thesharpening and keeping of a I safety razor, a razor vbeing shown in itsnormal position within the box. Fig. 2 shows this box as viewed fromabove with the lid removed. Fig. 3 is a cross-section on line 3-3in Fig.1, and Fig. 4 is-a similar cross-section of the box according to asomewhat modified embodiment. In Figs. 1-3 is shown a casing or box 21made from sheet metal said box 21 being preferably of a rectangularbasic shape and provided with plane upright sides adapted to be closedby means of a lid 22 slideable along the top of the box. To this end thebox is furnished with runners 23 lat the upper edges of its longitudinalexternal sides the lid being provided with corresponding tracks 24 inwhich the runners slide. If the cover is made from sheet metal bent toU-shape as shown in the drawing the said tracks 24 may be formed eitherby being bent at right angles to the side walls of the box or recurvedover the runners 23 in such a manner that two longitudinal sliding edges25 of the latter are caused to bear against the lower side of therunners. Between the edges thus formed and the bottom of the lid isintroduced a plate 27 provided with a stropping member 26 said plate 27being actuated by two transversal leaf springs 28 secured to the plateand bearing against the bottom of the lid the plate with the stroppingmember being thus resiliently arranged in a direction towards the bladeholder. The runners of the box slide between the edges 25 and the bottomof the plate 27. The position of the plate in the lid'is-pr'eferablyfixed with its one end edge against a projection 29 formed on rthe -backof the lid by a 'recurvature' of the 'plate which projectionalso-constitutes an abutment against the one 6o short side of the boxlimiting the movement vof the lid in one direction the position of theplate in the lid being also fixed by the plate forming an abutment withone ofthe s'ide'edges of the leaf springs against bosses'30 providedyojn the 65 lower side of the lid.' y j Y -To retain the safety razor inthe box 21 the one short side of the latter has a catch 31 attached toit adapted to grip the sleeye '19 on the end of the handle. Furthera`U-shaped 7o holder 32`is iixed tothe bottom of the box the upwardlydirected legs ofsaid holder being pro-Y vided with recesses 33 adaptedto receive the fork portion 34 of the razor. The razor is placed in thebox by inserting the handle end into the v catch 31 whereupon the forkportion 34 is placed inthe recesses 33. The safety razor is of a knowntype having a handle 1 which terminates in the bifurcated arms 2, 3 thatpivotally support the bladeholder 5 in which a blade 6 is so clamped.Meshing gears 7, 8 on the blade holder and a friction roller 10 providean automatic reversing of the blade during the sharpening operation.

'Ihe friction roller 10 is kept pressed against 35i the stropping member26 by the springs 28 so that the said roller is turned by friction whenthe lid 22 is slid to `and fro along the top of the box 21 whereby theholder 5 with the razor blade 6 will adjust itself through the gearwheels 90 7 and 8 in such a'manner that the edges of the blade areturned forward in the direction in which the stropping member 26 slides.The power with which the edge is pressed against the. stropping memberis dependent upon the nature of the friction surfaces of the roller andthe stropping member as well as on the tension of the springs 28, on theratio of gear of the gear wheels and on the position and diameter of theroller. By suitably selecting the value of the tensions of the springs28 it is possible to perform the stropping of the edges at such apressure that the edges of the razor blade always obtain a good anduniform sharpness.

'I'he holder 32v arranged to retain the safety 105 razor in the box mayas shown in Fig. 4 be replaced by a spring clamp 35 adapted to embracepartly the upper portion of the handle 1 the said clamp being preferablycarried by a spring 36 attached to the bottom of the box as illustratedU0 so that the safety razor is pressed upwardly in a direction towardthe stropping member 26. In this case no springs are required betweenthe cover and the plate 2'1 carrying the stropping member. Alternativelythe latter may be fixed directly on the bottom of the lid.

It desired; `thcdevice may also fbe constructed so that the blade holder5 withthe blade' is caused to perform a transversal movement'relativelyto the stropping member simultaneously with the sliding motion of thelatter. To this end the blade holder 5 with its shaft v`#may vbe axiallymovable between the Shanks 2 and 3 and the said shaft 4 may be arrangedtov project through suitable openings in the longitudinal side walls ofthe box and to bear against Ythe recurved borders 25 of the cover '.22`:themsaid borders being here made slanting Ain relation to thedirection in which the lid moves so that the shaft 4 with the holder 5and theblade'6 will slide .sideways when the lid-is moved to and fro. y

The details Yof-the device may be subjected to alterations` with respectto the `construction thereof within the `scope of the invention. Thusthe box or casing may be replaced by a frame or thelike the Acovercarrying the stropping member then consisting of a slide suitably formedfor` its purpose. Further `the toothed gearing f1, 8 arranged to rotatelthe blade holder may be replaced by a suitableffriction wheel gearing.rlhle guiding of the plate in Vthe slide or lid .as well :as the springarrangement may be devised in any suitable manner. Thus for instance thespringsnnaqy Abe formed directly outof the material of the cover 22 orthe plate-27 4provided these parts consist of a thin elastic material.To facilitate the stropping of razor blades or knives devised in someother way the blade holder` 5 may be arranged to be exchangeable.Moreover, the locking member for the razor blade may take the form ofslides provided with slots or the like and displaceable in a directionat rightangles or substantially at right angles to vthe longitudinaldirection of the handle said slides being arranged on the fork Shanks orthe parts connected therewith.

What I claim is:-

1. A blade sharpening device for razors of the type having a pivotedblade holder carrying a `blade and a friction roller geared to the bladeholder, comprising'a'box, a slidable lid for completely closing the box,blade sharpening means on the inside of the lid, razor-receiving meanswithinsaid vbox for supporting a complete razor to position the frictionroller thereof adjacent the said sharpening means, and spring actuatedmeans insaid box for urging said friction roller and said sharpeningmeans into mutual contact.

2. A blade sharpening device for razors of the type having a 4pivotedblade `holder carrying a blade and a friction roller geared tothe bladeholder, comprising a box, a slidable lid for completely closing the box,blade sharpening means on the 'insideof the lid, razor-receiving meanswithin said box for supporting a complete razor to position'the frictionroller thereof adjacent the said sharpening means,'and means in said boxfor urging said friction roller and said sharpening means into mutualcontact, said urgingv means including a spring disposed between theinside of said lid and said sharpening means. A

BO GABRIEL MONTGOMERY.

MJU

